Improvement in saw-mills



' tinned, fittest stint mimic.

TIMOTHY BEAUDRY, OF LEVIS,.CANADA.

Letters Patent No. 92,777, dated July 20, 1869. v

IMPROVEMENT IN sewints.

My invention relates to, and consists inv a particular.

method of hanging and operating'any desirablenulnber of saws at one andthe same time, without the use of the ordinary saw-gate; also, in 'aspecial arrangement of feeding-devices, whereby the logs are carried to,and the lumber from the saw, as will hereafter be more fully explained.

To'enable others skilled in the artto make and use my invention, I willproceed to describe. its construction and operation.

Figure 1 is a'longitudinal section of portion of the mill.

Figure 2 is a transverse section of the same.

Figure 3 is a plan view, andsection of the log-carnage.

Figure 4 is a section of the hexagonal drum, by which the log-carriageis moved.

Figure 5 is a side view of the buckle, by which the saw is attached tothe cross-head.

Figure 6 is a back view of fig. 5.

Figure 7 is a plan view of the gauges or s w-guides. Figure 8 is a planview of the upper slide and crosshead. I

Figure 9 is a front View of the upper cross-head.

Figure 10 is a plan view of buckle 0, showing a different method ofattaching saws to the lower crosshead.

To the cross-head i the saws a are attached, by means of bucklesb, figs.5 and 6. p

The lower gauge 9 is attached to the upper end of the slides h, andserves, in conjunction with the upper gauge 4, to guide and steady thesaws when in operation.

Attached to the upper portion of the frame A, are two perpendicularhanging-posts,'to'which the metallic slides k are secured.

In these slides are formed dovetailed grooves, in which the slides j,which are attached to the gauge a, operate.

In the rear of these slides is a horizontal shaft, m, carrying'pinions,-which operate upon a rack secured to theslides j.

Motion is given to the shaft m by means of the bevelledwheels a o, andhand-wheel p, for the purpose .of raising-or lowering the gauge '7', toadapt it to the size of the log.

A cross -head,. l, is attached to the upper end of the saws a, whichreciprocates in the slides j:

To the upper end of these slides issecin'ed a horizontal bar, D, towhich the gauge-support u fig. 14,

is attached.

The log is fed to the saw, and the lumber carried from it, by means ofan endless-chain carriage, moving upon longitudinal ways B.

Motion is given to this carriage by means of revolving hexagonal drumsx, to which motion is imparted by any'suitable gearing connected'withthe feed-puly For the purposeof holding the log in position while beingoperated. upon by the saw, the sections 1: of the chain-carriage arehollowed, as shown in fig. 3.

These sectio'ns, in connection with the spiked pressure-rollers t 8,hold the log firmly in position.

Having thus fully described my invention,

\Vhat I claim, and desire to secure by Letters Patcut, is

1. The method herein described of operating a series or gang of saws,without the use of gates or devices for straining them.

2. The chain-carriage 'u, in combination with the pressure-rollers t ands, when constructed and arranged to operate substantially as described,and for the purpose specified. I

3. The buckle I), to which saws a are attached, in combination with thecross-head i and pitman c, ,when constructed to operate as described,and for the purpose specified.

4. The strengthening-rod 2!, attached to the bar D, in combination withthe gauge 0*, when used as and for the purpose set forth.

Witnesses: T. BEAUDRY.

. G. TALBOTT, v

HENRYN. MYGATT.

